Method and system for communicating data with an inaccessible electronic device
View Patent ↗The invention relates to a method of communicating data with an electronic device, comprising the step of receiving signals conveyed by an electrical lead. The method is distinguished in that it comprises the following steps: fitting an RF radiofrequency interface with electrical contacts in the device, extracting signals from the electrical lead, and injecting signals resulting from the extracted signals, in the form of frames of radiofrequency signals in the RF interface with electrical contacts. The invention also relates to a radiofrequency communication device, a system comprising the device and a machine using the device.
1. A method for personalizing a subscriber identity module, comprising:
installing a radio frequency interface RF with electrical contacts in the subscriber identity module,
receiving radio frequency signals containing personalization data for the subscriber identity module, and
injecting the received radio frequency signals in the RF interface via the electrical contacts, and
personalizing the subscriber identity module using the personalization data in the injected signals.
2. The method according to claim 1 , wherein the personalization data are transmitted by modulating radio frequency signals on a power signal conveyed by an electrical conductor.
3. The method according to claim 1 , wherein the transmission takes place with a radio frequency reader having a capacitive interface with a conductor in order to inject the radio frequency signals on the conductor.
4. The method according to claim 1 , wherein the radio frequency signals are compatible with ISO/IEC 14443 and have a frequency of 13.56 MHz.
5. The method according to claim 1 , wherein the radio frequency signals are received from a connecting conductor, wherein the connecting conductor is a supply cable conveying a DC voltage used by the device.
6. An electronic device comprising:
a subscriber identity module comprising:
a radio frequency interface with electrical contacts connected to the subscriber identity module,
wherein said subscriber identity module is configured to personalize said subscriber identity module based on the personalization data contained in a radio frequency signal received from the RF interface.
7. The device according to claim 6 , further comprising:
a conductor that forms part of a power supply circuit and is configured to receive radio frequency signals and inject the radio frequency signals in the RF interface via the electrical contacts.
8. The device according to claim 6 , wherein the subscriber identity module is of a dual-interface combi type with electrical contacts and antenna, the supply circuit being a DC supply of the combi circuit.
9. A machine comprising the device according to claim 6 .
10. A radio frequency communication system comprising the radio frequency device RF according to claim 7 , wherein the communication system also comprises:
an electrical connecting conductor for transmitting the personalization data intended for the device,
means for generating signals comprising the personalization data and for injection on the electrical conductor.
11. The system according to claim 10 , wherein the transmission takes place with a reader of the RF contactless type having a capacitive interface with the electrical connecting conductor for injecting signals on the conductor.
12. A machine comprising the system according to claim 10 .